As I'd taken a long break from playing not long after PoF was released, I don't recall how long it was before we saw all of the Stats show up on Weapons/Armor. All I do know is that when I was able to finish getting the full Lunatic Armor Recipes, I could select any stat that was available from all of the Expansions as I have them all.
Linken: I know it's wishfull thinking that they'll at least communicate how long it'll be before we see them though.